Li-poly voltage - RCCanada - Canada Radio Controlled Hobby Forum
RCCanada - Canada's Radio Control Hobby Forum
Electric Flight Discuss Electric Flight in Canada

Closed Thread
Thread Tools Display Modes
Old 11-13-2004, 05:40 PM   #1
RCC Apprentice
I am: Brian
Join Date: Feb 2004
Location: Merrickville, ON

Feedback: 0 / 0%
Posts: 42
Total Props: 0
Li-poly voltage

       Remove this ad - become a site supporter!
I am using a Kontronic controller on my speed 400 motor with a Lithium polymer battery. I'm not sure if this controller will sense the right cut off for the lithium battery of 2.5 volts.

Anyone with any experience on this? Also when a flight is ended can you check the voltage with a regular meter to determine if it is approaching 5 volts?

Thanks guys/gals
skylane62 is offline   Quick reply to this message.

Sponsored Links - Subscribe to remove this ad.
Old 11-13-2004, 08:17 PM   #2
RCC Master Contributor
Rob's Avatar
I am: Rob
Join Date: Nov 2003
Location: Owen Sound

Feedback: 11 / 100%
Posts: 1,248
Total Props: 0
You will have to have the cells under the a load. as for the controller i have no idea. i thought it was 3Volts per cell as the min.
What do you mean , I can land upside down
Rob is offline   Quick reply to this message.
Old 11-14-2004, 06:25 AM   #3
RCC Expert Contributor
rscamp's Avatar
I am: Rob C
Join Date: Dec 2002
Location: Dundas, ON

Feedback: 1 / 100%
Posts: 864
Total Props: 0
The "right" cutoff voltage for a lithium cell depends on the battery characteristics and load. Under load, a higher internal impedance cell like an E-Tech 1200 might be just fine at 2.5V/cell low voltage cutoff (LVC). In fact, setting the LVC higher than this can result in very short flight times with this cell when load currents are higher. As a very general rule, however, 3.0V/cell LVC is a good guideline.

Narrower voltage ranges (higher LVC, lower max charge voltage) are easier on lithium cells and can significantly increase life (number of cycles). I have no LVC in my heli (LVC is not a good idea in a heli!). It turns out I rarely go below about 3.5V/cell rest voltage...

rscamp is offline   Quick reply to this message.
Closed Thread

Quick Reply

Register Now

In order to be able to post messages on the RCCanada - Canada Radio Controlled Hobby Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionally, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Your Name
Your first name and last initial is required if you plan on using the forum.
Which city & province you live in. This is mandatory for classified listings.
Radio of choice?
Which radio is your current favorite to use?
Number of RC Vehicles?
How many boats, cars, planes do you own?


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
vBulletin Message

Thread Tools
Display Modes

Forum Jump

All times are GMT -5. The time now is 07:34 PM.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.